There are three MODs that can increase the potency of Flame Shots. Only one copy of each MOD can be equipped at a time. The first, Fuel Injector, adds two extra fireballs to the attack, and increases its horizontal spread. The second, Combustion, creates instant-kills by causing enemies hit with the Flame Shot to explode once their Energy Meter is depleted. Lastly, Smolder increases the length of time that enemies burn after being hit with a Flame Shot.

Fuel Injector: "Adds two extra fireballs to the Flame Shot, and increases its horizontal spread."

Combustion: "When an enemy you've set on fire is killed, it will explode."